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Daikin VRV Integration

I am integrating to a Daikin system and was able to successfully connect to the D-BACS gateway and program the IP address and the device instance, but cannot see any of the units when I click "Operating State". Also not able to autodiscover any of them. All units are powered on and wiring is solid, but I get nothing. Is there some crucial step that I missed? It seems like it's probably just something silly.